They have access to great Xyz Monsters as well, capable of searching out any Melffy Monster you need as well as negating the effects of the opponent's Monsters while they are on the field
Hold on, you might be thinking, Triplet Beat
Flying types are immune to Ground types, meaning that they receive no damage: Ground - Flying types dont touch the ground, so their attacks cant affect them
Or whatever you call a gaggle of Myr touched by the Phyrexian yuck
In other words, as long as Regidrago has 3 energies attached (the ones you need to declare its attack), you can choose any attack from any dragon in your discard pile
Ruin Raider is the best Dark Confidant thats been printed since the original, and I expect to see plenty of the Orc Pirate in Standard